Go950 Live touch-screen sensitivity

Hi,

Is there a workaround to deal with the excessive sentivity of the
touch-screen ?
In other words, on the Go950 Live, when one put the finger on a sensitive
area, the next screen area is actuated as well as the third level (very rare
but it happened).
This is particularly annoying because this may invalidate sound guidance
when touching the center of the nav screen or pass one or two configuration
screens when touching the right arrow in the preference mod menu or even
turn the sound off when touching the left down part of the nav screen when
needing an information.
I already upgraded the engine to 9.026 but it didn't cure it.

TIA